1931 (July 7) Cover franked 55c from Nairobi to Manyoni via Mwanza bearing an Air Mail label and endorsed "By First Flight, Nairobi - Kisumu". Handstamped violet "LOCAL AIR FEE PAID" and "Owing temporary failure / Air Service Mail (from Kisumu) / forwarded normal route", backstamped at Mwanza (July 20) and Manyoni. Sixty covers were carried on the first flight from Nairobi to Kisumu; there was no connecting Imperial Airways flight from Kisumu due to the southbound "City of Khartoum" making a forced landing at Kabanga Port on July 4th, and the cover was therefore forwarded by lake steamer. A scarce first flight cover with this cachet. Photo on Page 50. (Image1)

1932 (Jan 25) Registered cover franked 65c from Nairobi to Kisumu, inscribed to go on the first Imperial Airways flight but actually carried on a Wilson Airways charter flight due to the "City of Delhi" making a forced landing near Broken Hill; and a cover franked 7d from London (Jan 26) to Tukuyu in Tanganyika, carried by Wilson Airways from Kisumu to Nairobi from where it was carried on the "City of Baghdad", backstamped at Mbeya (Feb 4) and Tukuyu (Feb 5). Two scarce Wilson airways shuttle flights, both due to mishaps on the Imperial Airways service. (2).

1934 (Feb 14) Cover franked 35c from Mwanza to Daressalaam, bearing a blue Air Mail label, one of just five covers carried on this Wilson Airways Government Charter flight. Rare.

1934 (Feb 12) 15c Envelope uprated 5c + 10c + 50c with a blue Air Mail label, carried on the first flight from Daressalaam to Utete, with arrival backstamp, just six covers supposedly carried, fine and scarce. Photo on Page 50. (Image1)

1934 (Nov 20) O.H.M.S cover franked 20c pair from Sumbawanga to the Postmaster at Daressalaam inscribed "1st Air Mail Sumbawanga" and signed "A.N Francombe, Pilot Wilson Airways, 22/11/34" with arrival backstamp (Nov 21). Francombe flew the Director of Agriculture Mr Harrison on a round 'safari" via Morogoro, Shinyanga, Mwanza and Sumbawanga, just two flown and pilot signed covers recorded from Sumbawanga, fine and extremely rare. Photo on Page 50. (Image1)

1936 (Apr 2) Registered cover from Egypt to the Governor of Tanganyika franked 80m, inscribed "By Nairobi - Daressalaam air service. Imperial Airways & Wilson Air Line. First Day Service 2nd April 1936", backstamped at Nairobi (Apr 5) and Daressalaam; and 1937 (July 3) cover from Johannesburg to Kisumu franked 11/2d, carried on the first South African Airways flight in conjunction with R.A.N.A and Wilson Airways, backstamped at Kisumu (July 6) and signed by the pilot Capt L. Inggs. (2).